Anatole Investment Management Ltd: CIENA CORP (CIEN): Quarterly 13F Position History
As of Q1 2026, Anatole Investment Management Ltd reported 313,445 shares of CIENA CORP (CIEN), worth $121.7M and representing 17.0% of its 13F equity book. Quarter-over-quarter share count change: 188,153 (-37.5%) . The position first appeared in Q3 2025 and has been disclosed across 3 13F-HR filings in Pactolio's tracked window.
- 313,445Shares Held (Latest Filing)
- $121.7MReported Market Value (Latest Filing)
- 17.0%Portfolio Weight (% of 13F Equity Book)
- 188,153Quarter-over-Quarter Share Change
- +$4.4MQuarter-over-Quarter Value Change
- 523,688Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 3 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 313,445 | 188,153 | -37.5% | $121.7M | 17.0% | $388.2 |
| Q4 2025 | 501,598 | 22,090 | -4.2% | $117.3M | 19.6% | $233.9 |
| Q3 2025 | 523,688 | — | — | $76.3M | 8.0% | $145.7 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Anatole Investment Management Ltd first disclose a CIEN position in 13F-HR filings?
Anatole Investment Management Ltd first reported CIENA CORP (CIEN) on its 13F-HR filing for the period ending 2025-09-30 (Q3 2025). The position has appeared on 3 reported quarters within Pactolio's tracked window.
What was Anatole Investment Management Ltd's most recent quarter-over-quarter share-count change in CIEN?
Between Q4 2025 and Q1 2026, Anatole Investment Management Ltd reduced its CIEN position by 188,153 shares (-37.5%), leaving 313,445 shares at a market value of $121.7M.
Does the implied price-per-share represent Anatole Investment Management Ltd's cost basis in CIEN?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.